Hitachi 670 Series Application Manual page 41

1MRK505382-UEN Rev. K
Setting
IntervIdMinHig
Idunre
CrossBlock
I2/I1Ratio
I5/I1Ratio
NegSeqDiff
IminNegSeq
NegSeqROA
AddDelay
ImaxAddDelay
CurveType
DefDelay
IDMTtMin
TD
p
a
b
c
Communication set-up, 670/650 series
Application Guide
IED 1
30.000 s
5.50 · IBase
1
15%
25%
On
0.04 · IBase
60.0 deg
Off
1.00 · IBase
15
0.100 s
0.010 s
0.00
0.02
0.14
1.00
1.00
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Analog and binary signal transfer for line differential protection
IED 2 Description
30.000 s Time interval when
IdMinHig is active (note
5)
5.50 · IBase Unrestrained operate
(differential) current
limit (note 6)
1 CrossBlock logic
scheme applied (note
7)
15% Second to fundamental
harmonic ratio limit
25% Fifth to fundamental
harmonic ratio limit
On Internal/external fault
discriminator enabled
(default)
0.04 · IBase Minimum value of the
negative-sequence
current
60.0 deg Operate angle (ROA)
for Internal/external
fault discriminator
(default)
Off Additional delay
disabled (default)
1.00 · IBase Not applicable in this
case (default)
15 Not applicable in this
case (default)
0.100 s Not applicable in this
case (default)
0.010 s Not applicable in this
case (default)
0.00 Not applicable in this
case (default)
0.02 Not applicable in this
case (default)
0.14 Not applicable in this
case (default)
1.00 Not applicable in this
case (default)
1.00 Not applicable in this
case (default)
Section 4
35